Weather on March 31
Seattle, WA
55 Years of Data
Avg High
56°F
Avg Low
42°F
Warmest
2016
58°F avg
Coldest
1976
41°F avg
About This Date
March 31st in Seattle, WA typically brings cool spring weather, with average highs around 56°F and lows near 42°F. Over 56 years of records, the warmest March 31st was in 2016 (58°F average), while the coldest was 1976 (41°F) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 55% of March 31st dates historically, with the wettest March 31st recording 1.5" of rain. The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
Planning for March 31st in Seattle, WA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 59° | 39° | 49° | — | — |
| 2025 | 54° | 42° | 48° | 0.08" | — |
| 2024 | 63° | 40° | 51° | — | — |
| 2023 | 49° | 42° | 45° | 0.48" | — |
| 2022 | 55° | 40° | 47° | 0.1" | — |
| 2021 | 59° | 34° | 46° | — | — |
| 2020 | 51° | 41° | 46° | 0.05" | — |
| 2019 | 66° | 43° | 54° | — | — |
| 2018 | 59° | 46° | 53° | — | — |
| 2017 | 56° | 38° | 47° | — | — |
| 2016warmest | 73° | 43° | 58° | — | — |
| 2015 | 57° | 44° | 51° | 0.91" | — |
| 2014 | 61° | 38° | 49° | — | — |
| 2013 | 69° | 45° | 57° | — | — |
| 2012 | 50° | 39° | 45° | 1.27" | — |
| 2011 | 56° | 48° | 52° | 0.28" | — |
| 2010 | 54° | 39° | 46° | 0.03" | — |
| 2009 | 50° | 38° | 44° | 0.15" | — |
| 2008 | 50° | 37° | 44° | 0.23" | — |
| 2007 | 50° | 42° | 46° | 0.58" | — |
| 2006 | 59° | 46° | 53° | 0.18" | — |
| 2005 | 57° | 43° | 50° | 0.66" | — |
| 2004 | 53° | 38° | 45° | — | — |
| 2003 | 58° | 47° | 52° | 0.33" | — |
| 2002 | 57° | 47° | 52° | — | — |
| 2001 | 56° | 44° | 50° | 0.05" | — |
| 2000 | 62° | 42° | 52° | — | — |
| 1999 | 52° | 38° | 45° | — | — |
| 1998 | 51° | 42° | 47° | 0.25" | — |
| 1997 | 50° | 38° | 44° | 0.36" | — |
| 1996 | 51° | 41° | 46° | 1.5" | — |
| 1995 | 62° | 49° | 55° | 0.15" | — |
| 1994 | 55° | 48° | 52° | — | — |
| 1993 | 66° | 38° | 52° | — | — |
| 1992 | 64° | 47° | 55° | — | — |
| 1991 | 63° | 39° | 51° | — | — |
| 1990 | 58° | 45° | 51° | — | — |
| 1989 | 50° | 42° | 46° | 0.18" | — |
| 1988 | 61° | 45° | 53° | — | — |
| 1987 | 69° | 43° | 56° | — | — |
| 1986 | 58° | 38° | 48° | — | — |
| 1985 | 56° | 48° | 52° | 0.03" | — |
| 1984 | 63° | 40° | 51° | — | — |
| 1983 | 60° | 43° | 51° | 0.33" | — |
| 1982 | 47° | 36° | 41° | 0.48" | — |
| 1981 | 51° | 42° | 47° | 0.58" | — |
| 1980 | 49° | 40° | 44° | 0.33" | — |
| 1979 | 49° | 38° | 43° | 0.23" | — |
| 1978 | 59° | 37° | 48° | — | — |
| 1977 | 50° | 44° | 47° | 0.3" | — |
| 1976coldest | 47° | 36° | 41° | 0.69" | — |
| 1975 | 50° | 36° | 43° | 0.13" | — |
| 1974 | 55° | 43° | 49° | 0.48" | — |
| 1973 | 53° | 43° | 48° | 0.03" | — |
| 1972 | 60° | 46° | 53° | — | — |
| 1971 | 54° | 40° | 47° | — | — |
56 years of data from SEATTLE URBAN SITE